Electromagnetic waves are produced when
a) an electric charge vibrates or accelerates
b) there is exertion of magnetic forces on charged particles
c) there is alignment of an electric field and a magnetic field
d) a magnetic change occurs in a medium

Suppose that a mass of 2 kg is attached a spring whose spring constant is 50. the system is damped such that b = 12 . the mass is set in motion with an initial velocity of -8 m/s at a position 0 meters from equilibrium. set up and solve a differential equation that models this motion. write your solution in the form a cos ( ω t − α ) where α is a positive number. use your solution to fill in the information below: what is the amplitude of the motion? what is the value of ω ? what is the phase shift?